In addition to amending the game to let players continue their adventures after the end of the main quest and raising the level cap to 30, Broken Steel includes a few hours of new quest line. In order to access the new story content from Broken Steel, the player has to have finished the main storyline from the base game. However, the level cap expansion will take effect upon installation of the add-on, so players previously stalled at level 20 will once again accumulate XP even if they haven't finished the main storyline.